Submission #949192

#	Time	Username	Problem	Language	Result	Execution time	Memory
949192		quanlt206	Gap (APIO16_gap)	C++17	30 / 100	44 ms	9556 KiB

gap

#include "gap.h"
#include<bits/stdc++.h>
#define X first
#define Y second
#define all(x) begin(x), end(x)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define FORD(i, b, a) for(int i = (b); i >= (a); i--)
#define REP(i, a, b) for (int i = (a); i < (b); i++)
#define mxx max_element
#define mnn min_element
#define SQR(x) (1LL * (x) * (x))
#define MASK(i) (1LL << (i))
#define Point Vector
#define left Left
#define right Right
#define div Div

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;
typedef pair<db, db> pdb;
typedef pair<ld, ld> pld;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef pair<ll, ll> pll;
typedef pair<ll, pll> plll;
typedef pair<ll, int> pli;
typedef pair<ll, pii> plii;

template<class A, class B>
    bool maximize(A& x, B y) {
        if (x < y) return x = y, true; else return false;
    }
template<class A, class B>
    bool minimize(A& x, B y) {
        if (x > y) return x = y, true; else return false;
    }
/* END OF TEMPLATE */

const int N = 1e5 + 7;

ll a[N], b[N];
int n;
int cntQuery = 0;

ll sub1(int n) {
    int l = 1, r = n;
    ll s = 0, t = 1e18;
    while (l <= r) {
        ll* mn = new ll();
        ll* mx = new ll();
        MinMax(s, t, mn, mx);
        a[l] = *mn;
        a[r] = *mx;
        l++;
        r--;
        s = *mn + 1;
        t = *mx - 1;
    }
    ll res = 0;
    REP(i, 1, n) maximize(res, a[i + 1] - a[i]);
    return res;
}

ll findGap(int T, int n) {
    if (T == 1) return sub1(n);
    a[0] = -1;
    ll res = 0;
    int i = 1;
    while (i <= n) {
//        cout<<i<<" "<<cntQuery<<"\n";
//        cerr<<i<<" "<<a[i]<<endl;
        // check a[i - 1] + 1 == a[i]
        ll* mn = new ll();
        ll* mx = new ll();
        MinMax(a[i - 1] + 1, a[i - 1] + 1, mn, mx);
        if (*mn != -1) {
            a[i] = a[i - 1] + 1;
            maximize(res, 1);
            i++;
            continue;
        }
        ll last = a[i - 1];
        if (res > 0) {
            // check a[i - 1] + res >= a[i]
            ll *mn = new ll();
            ll *mx = new ll();
            MinMax(last, last + res, mn, mx);
            if (*mx > last) {
                a[i] = *mx;
                i++;
                continue;
            }
        }
        ll v = 0;
        while (true) {
            bool kt = false;
            ll save_v = -1;
            FOR(i, 0, 60) {
                ll *mn = new ll();
                ll *mx = new ll();
                MinMax(last + 1, last + v + MASK(i), mn, mx);
                if (*mn == -1) {
                    save_v = i;
                    continue;
                }
                break;
            }
            if (save_v == -1) break;
            v+=MASK(save_v);
        }
        a[i] = last + v + 1;
        if (i > 0) maximize(res, a[i] - a[i - 1]);
        i++;
    }
    return res;
}

Compilation message (stderr)

gap.cpp: In function 'll findGap(int, int)':
gap.cpp:100:18: warning: unused variable 'kt' [-Wunused-variable]
  100 |             bool kt = false;
      |                  ^~

• Subtask 1: 30 / 30
• Subtask 2: 0 / 70